package com.hy.springmvc.entities;

public class User {
    
    private String username;
    
    private String password;
    
    private String email;
    
    private Address address;

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public Address getAddress() {
        return address;
    }

    public void setAddress(Address address) {
        this.address = address;
    }

    @Override
    public String toString() {
        return "User [username=" + username + ", password=" + password
                + ", email=" + email + ", address=" + address + "]";
    }
    
}

package com.hy.springmvc.entities;

public class Address {
    
    private String province;
    
    private String city;

    public String getProvince() {
        return province;
    }

    public void setProvince(String province) {
        this.province = province;
    }

    public String getCity() {
        return city;
    }

    public void setCity(String city) {
        this.city = city;
    }

    @Override
    public String toString() {
        return "Address [province=" + province + ", city=" + city + "]";
    }
    
}

@RequestMapping("/testPojo")
    public String testPojo(User user) {
        System.out.println("testPojo :"+user);
        return SUCCESS;
    }

<form action="test/testPojo">
    username:<input name="username" type="text"><br>
    password:<input name="password" type="password"><br>
    email:<input name="email" type="text"><br>
    province:<input name="address.province" type="text"><br>
    city:<input name="address.city" type="text"><br>
    <input type="submit" value="http://www.mamicode.com/submit">
</form>